<template>
    <div>
      <div style="width: 500px">
        <el-input
            placeholder="请输入部门名称进行搜索。。。"
            prefix-icon="el-icon-search"
            size="small"
            v-model="filterText">
        </el-input>

        <el-tree
            class="filter-tree"
            :data="deps"
            :props="defaultProps"
            :filter-node-method="filterNode"
            :expand-on-click-node="false"
            ref="tree">
          <span class="custom-tree-node" slot-scope="{ node, data }"
                style="justify-content: space-between;display: flex;width: 100%">
            <span>{{ data.name }}</span>
            <span>
              <el-button
                  type="primary"
                  size="mini"
                  class="deptBtn"
                  @click="() => showAddDept(data)">
                添加部门
              </el-button>
              <el-button
                  type="danger"
                  size="mini"
                  class="deptBtn"
                  @click="() => deleteDept(data)">
                删除部门
              </el-button>
            </span>
          </span>
        </el-tree>
      </div>
      <el-dialog
          title="添加部门"
          :visible.sync="dialogVisible"
          width="30%">
        <div>
            <table>
              <tr>
                <td>
                  <el-tag>上级部门</el-tag>
                </td>
                <td>{{pname}}</td>
              </tr>
              <tr>
                <td>
                  <el-tag>部门名称</el-tag>
                </td>
                <td>
                  <el-input v-model="dep.name" size="small" placeholder="请输入部门名称。。。"></el-input>
                </td>
              </tr>
            </table>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="dialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="doAddDep">确 定</el-button>
        </span>
      </el-dialog>
    </div>
</template>

<script>
export default {
  name: "DepMana",
  data(){
    return{
      filterText:"",
      deps:[],
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      dialogVisible:false,
      dep:{
        name:"",
        children:[],
        parentId:-1
      },
      pname:""
    }
  },
  mounted() {
    this.initDeps();
  },
  watch: {
    filterText(val) {
      this.$refs.tree.filter(val);
    }
  },
  methods:{
    addDep2Deps(deps,dep){
      for(let i = 0;i < deps.length;i++){
          let d = deps[i];
          if(d.id === dep.parentId){
            d.children = d.children.concat(dep);
            return;
          }else{
            this.addDep2Deps(d.children,dep);
          }
      }

    },
    initDep(){
      this.dep = {
        name:"",
        children:[],
        parentId: -1,
      };
      this.pname = ""
    },
    //添加部门
    doAddDep(){
      this.$postRequest("/system/basic/department/",this.dep).then(resp=>{
        if(resp){
          this.dialogVisible = false;
          this.dep.name = "";
          this.initDep();
          this.addDep2Deps(this.deps,resp.obj);
        }

      })
    },
    //添加弹出框
    showAddDept(data){
      this.dep.parentId = data.id;
      this.pname = data.name;
      this.dialogVisible = true;
    },
    removeDepFromDeps(p,deps,id){
      for(let i = 0;i < deps.length;i++){
          let d = deps[i];
          if(d.id === id){
            deps.splice(i,1);
            if(deps.length===0){
              p.isparent = false;
            }
            return;
          }else {
            this.removeDepFromDeps(d,d.children,id);
          }
      }
    },
    //删除
    deleteDept(data){
      if(data.isparent){
          this.$message.error("父部门删除失败！！！")
      }else{
        this.$confirm('此操作将永久删除['+data.name+']部门, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          this.$deleteRequest("/system/basic/department/"+data.id).then(resp=>{
            if(resp){
              this.removeDepFromDeps(null,this.deps,data.id);
            }
          })
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });
        });
      }
    },
    //初始化部门
    initDeps(){
      this.$getRequest("/system/basic/department/").then(resp=>{
        if(resp){
          this.deps = resp;
        }
      })
    },
    //树形控件值过滤方法
    filterNode(value, data) {
      if (!value) return true;
      return data.name.indexOf(value) !== -1;
    }
  }
}
</script>

<style scoped>
.deptBtn{
  padding: 2px;
}
</style>